I've only been detecting a few weeks but I went to Harbor Freight and got their $17 pinpointer. I have no idea how a good one works, but I was amazed how well this cheapie works. Used it on a short hunt today and found 8 modern coins. I have dug targets before and found nothing. Today every time I got a coin signal on my 250, there was a coin to be found. Couple things I learned, coins are hard to spot because they take on the color of the dirt. Also 2 of the coins were found outside the hole, I imagine they flipped out while pulling out the plug. Now I'm thinking my previous empty holes, probably had something in them. This md stuff sure is addicting.